Title :
Moment analysis of ambient noise dominated by local shipping
Author :
Pflug, Lisa A. ; Jackson, Pam M. ; Ioup, Juliette W. ; Ioup, George E.
Author_Institution :
Naval Res. Lab., Stennis Space Center, MS, USA
Abstract :
The stationarity and local Gaussianity of ambient shipping noise recorded during an experiment conducted in the San Diego port area is investigated. First through fourth order moments are used to identify time periods of nonstationarity in the noise. Comparison of the shipping data with colored Gaussian noise indicates that the third order moments deviate from Gaussianity more than the fourth order moments. The local Gaussianity is quantified using the Kolmogorov-Smirnov test. While the shipping noise at the deeper depth appears somewhat non-Gaussian during certain time periods, the shallower depth data appears Gaussian
Keywords :
Gaussian noise; acoustic noise measurement; acoustic signal detection; acoustic signal processing; higher order statistics; ships; underwater sound; Kolmogorov-Smirnov test; San Diego port area; ambient noise; ambient shipping noise; colored Gaussian noise; experiment; fourth order moments; moment analysis; noise nonstationarity; ship traffic; shipping data; signal detection; time periods; Detection algorithms; Detectors; Gaussian noise; Higher order statistics; Laboratories; Marine vehicles; Noise generators; Noise measurement; Signal detection; Working environment noise;
Conference_Titel :
Statistical Signal and Array Processing, 1996. Proceedings., 8th IEEE Signal Processing Workshop on (Cat. No.96TB10004
Conference_Location :
Corfu
Print_ISBN :
0-8186-7576-4
DOI :
10.1109/SSAP.1996.534869
